故障现象 一辆奥迪100的V6型轿车,在怠速运转时,发动机经常熄火,但汽车在低、中、高速行驶时无异常。 故障原因与检查 调取故障码,无故障显示,说明发动机的电控系统工作正常,故障为非电控系统所致。非电控系统导致上述故障的可能原因有:一是进气系统有漏气现象;二是怠速稳定阀磨损或堵塞;三是EGR即废气再循环系统工 Fault phenomenon An Audi 100 V6 sedan, the engine is often shut down at idle, but the car is in low, medium and high speed without exception. Fault reason and inspection Get fault code, no fault display, indicating that the engine’s electronic control system is working properly, the fault is caused by non-electronic control system. Non-electronic control system may lead to the above-mentioned possible causes are as follows: First, there is air leakage in the air intake system; Second, the idle stability valve wear or blockage; Third, EGR that exhaust gas recirculation system